Thread cutting mechanism for box looms



Sept. 25, .1934. 1

' w. J. INGHAM ET AL 1,974,677

THREAD CUTTING MECHANISM FOR BOX LOOMS Filed June 16, 1931 3 Sheets-Sheet 1 Sept. 25, 1934. w J |NGHAM ET AL 1,974,677

THREAD CUTTING MECHANISM FOR BOX LOOMS Filed June' 16. 1931 3 Sheets-Sheet 2 P 1934- w. J. INGHAM ET AL' 1,974,677

THREAD CUTTING MECHANISM FOR BOX LOOMS Filed June 16. 1951 3 Sheets-Sheet 5 Patented Sept. 25, 1934 THREAD CUTTING MECHANISM FOR BOX LOOMS WiHiam'J- Insham n Joseph Laun s Nashu .N- H- A-pplioation June 16, 1931 Serial No. 544,722

18 Claims, (01. 1391-116) In weavin patte n fab ic i box looms t e changin o the hutt es eq i d t rodu th d i ed pattern re u ts in th ormation o oo e l ops of fillin attaohedto th sewa of th f bric at th drop box side o th o m. Thes l ops are cau ed by the act thetwhen any shuttie s m ved into an idl posit n by h raising or lowerin of th h n astrand o filli s e rnn= 11mg fr m th fell f th goods t th b bbin in t shuttle which has just been reti ed, and when hi shnttl iseea n hron h ioae into wo k ins po on and makes ts first piok it wi l l op h filling arou d the entire wid -o fabr c which has been wov n in e meantim our Patent ,,8Q ,20 ra ted pril .2 1931, W have shownyand descr bed a 'zneohen rn for preventing th Ion e'tio of thes loon a o hh'tQlhhfiQflllly cu t n -.o;'.f. ht a poin olose to the selvaee, an strand o fil n runnin item th se vae t an id e shut le th s m ohanisni ha rov d rysatisfaoto in taetiee. .It oper- (etes vvh eithe w ving operat on pro s s end consequ ntly a oids a ne es t o a subsedn t h nd trimm n So for .a we are aware it is then y mecha ism ,for et rxnine thisiumtion ivh oh ha p o d eonlmere tliv s ees inl.

The p s n n enti n re at t n ehanis n of the genera type ab e d s b d. i aim u the to rfe t and hnn mechanisms of hi g nal ch acte and mor es ecia l th m h nism sh wn n ou p o -pa nt ith a i w to i rea n t 'l ie a rel ab lity f u h .m hes xns f ns their con t ct n and a tating their installation on looms already in use.

The nature of the invention will be readily understood from the following description when read in connection with the accompanying drawings, and the novel features will be particular- 1y pointed out in the appended Claims.

In the drawings V Figure 1 is a perspective View o fthose parts of a box loom with which the mechanism provided by this/invention is more particularly associated;

Fig. 2 is a side View on a larger scale of the mechanism shown in Fig. '1 for cutting the fillms; t s

Fig. 3 is an exploded perspective view of parts 9 h neohanism hown n his 2.;

Pie 4: is ap rsoeot ve view of th .threedelamn: ns devic and apart of the operatin "mean therefor;

i 5 s a iro t View of th thread o am wn in i e; a d

Fig. 6 is a side view, nemtl-y in c ioss section, of

* the nantsshown in F s s a d 5- te ring fi t o i h dr p l os-oi the o is i di at d .at 2, th a a .3 the lav sl d a and th n ed .at 5. h se pa -t heing so n- -ru e a a d an opera e in the usual mann r- I h th ead nt ne meoh nism pro ided by t is inve tion resemble tha shown i ou .oe.t= nt ab ve desi net d i that i cludes means f g pp ng t fi in thread runnin fr m the s ivaee of the oods to bobbin in enzi le shnt- M ie [and mean fo severin the th ad so ip ed a a po nt lose t th .selveee o the ia rio- The presen nven i n, howe enhe fsixnplified the operating mechanism for the thread gripping mean ha im ved t e cutter, and plac 39 thof th s devices unde the woontrol of Hail:- tern meohen sm o the machine .so heteither o oth o t em can be ope ated on during these p iods when snoh operation is .neeesser roesirqahle. vc desi ab e o mount the th ead o empins u or grip ng de i e fo mo men to ollow the swingot the fill ng t e res ;d atieo t dur ng th pe iods in which the elem .ine ,d vioe to h ope ated, a d th s is .niost onve ntly aoeotnnlished by suppo t ng th ripping d vice direet- 59 v on h l y in the constru tion sh wn n u pr o pa t Re err ng mo e 'llall lii ll fil'ly to lies- 1 an it wil .heseen ha th ns sl shu t e ox month piece :ho been replaced ove she c el mout niece o taoket 5 which s bolted w to the v ree zse has a lowe snxieo 7 lyin bove the pet o th s nttlee d e v hti n side nieee 9 hio i osit o d a t e owered s d oi heshu t e Iaoe tnthese po ts del ing the 99 op end one si e of th of h shn tle h sjhe thtead gr ping devio'e i moun ed on the h aehet e nd oomptises a ou hened plate 10 wh h is seeme to th o ward .sntfee of the upr ght pa and eeooperhtin U-shan dm m 5 he which inhtaoe ert cal eg1l o is has ins or ne r it e d is guided n p ns 15-1 o mov men t wa dand rom the plat 1. .5R Ti1lg -i ed aroun the. vpins 1 in oonteot wi h th plate 10- .A hlade 17 vwlnounted tosw h betwe n the two pa ts ;.10 end 12 this blade he ng remova y se ured to he head 18 whioh i um porte -on a rock sha t .01:0 o a t erewith, the rockshaft, in tu bei esuppor d n zth xeo et Th heed 11 i u es a toothed s t on 2.1 mesh n with gea te th 221011 the lar r end of a ope atin te m wh eh is pivoted on the bracket 6 a 2,4 and xte ds reerws dly s hat it s i g t e p ane a approx mat y ie tane e 1 to the plane of movement of the blade 1'7. A coiled spring 25, Fig. 1, tends to lift this arm and to hold it normally in the position shown in Figs. 4 and 5 where it maintains the blade 17 in its elevated position, as shown in said figures.

When the pattern mechanism calls for a change in color of the filling, and therefore for a change in shuttles, the drop box 2 is raised or lowered, thus moving the working shuttle into an idle position and bringing another shuttle into working position. Upon the next beat-up of the lay, a strand of filling F, Figs. 1 and 4, will be left running from the fell of the goods to the shuttle which has just been retired from operation. As the lay swings backward again a roll 26 on the end of the arm 23 will strike a normally stationary cam 27, Fig. 1, and swing the rearward end of the arm 23 downwardly, thus operating the blade 1'7 of the clamping device and causing it to force a bight of the strand F between the clamping members 10 and 12, as shown in Fig. '4. Immediately after this operation has occurred, the blade 17 is swung into its open position again by the spring 25, but the bight of filling which it has just forced between the parts 10 and 12 is held securely gripped by them. The gripping device thus may be considered to include three elements, namely, those indicated at 10, 12 and 1'7. The parts 10 and 12 are operative of andby themselves to grip and hold the yarn. The blade 1'7, however, serves to force the bight of filling or yarn between the parts 10 and 12 and cooperates with them while it is between them to grip the filling.

Preferably the edge of the part 9 across which the filling is drawn is roughened or ribbed horizontally to prevent the filling from slipping downwardly. It may also be pointed out that the lower end of the extension 9 terminates in a lug or foot 28 whichlies approximately flush with the surface of the shuttle race and closes the vertical gap which usually is provided in a box mechanism to permit the strands of filling running to the idle shuttles to drop down below the level of the shuttle race. In other words, this shuttle box mouth is so constructed that the filling running to an idle shuttle will be held within the range of operation of the gripper blade 1'7.

While the strand of filling running'to a shuttle which has just been retired'is gripped in the manner above described, it is parted or severed at a point closely adjacent to the selvage ofthe goodsby a cutter of novel construction. Referring to Figs. 1, 2 and 3 it will be seen that this cutter .is associated with the temple roll 30. It comprises a stationary blade 31 which is secured between the upper and lower parts 32 and 33, respectively, of a temple frame 34 that is mounted on the breast beam. Cooperating with the stationary cutter is a movable cutter 35 lying immediately beside the stationary cutter 31 and held aaginst the latter by a coiled spring36 which encircles the temple roll shaft 3'7, this shaft extending through both the cutters 31 and 35. A stub shaft 38 is secured to the movable cutter 35 and passes through a slot 40, Fig. 2, in a lever 41 which is fulcrumed at 42 on the temple frame 34. A spring 43 coiled about the pivot stud 42 acts on the lever 41, and when permitted to do so will hold this lever forward in the postion in which it is shown in Fig. 2. In this position the cutter is open. When the lay strikes the lower end of this lever, however, it forces it forwardly, and this movement of the lever operates through the pin 38 to force the movable cutter 35 forwardly, this cutter being provided with a slot 4'7 through which the temple roll shaft 3'7 projects. This blade 35 is guided between the lugs 32 and 33 on the temple frame. After the lay has operated the cutter it engages the heel 48 of the temple and forces the Whole temple mechanism forwardly in the usual manner, the parts of the cutter'moving bodily with the temple.

The cutter operates immediately beside the selvage at the fell of the goods, and in order to facilitate the guiding of the strands to be severed into proper relationship to the cutter, the blade 35 is provided With an extension 44 projecting at right angles to the main body of the blade and designed to extend under and to bear against the warp threads at the fell. In other words, the upper edge of this extension 44 lies substantially in line with the lower edge of the slot in the temple roll casing or guard. Located just behind this extension is a notch 45 in the cutter 35 and a bevelled surface 46 is formed between the upper rearward end of this notch and the upper surface of the extension 44. Consequently, when a shuttle has been retired from action the thread running from this shuttle to the selvage will be caused to ride up over the surface 46 and to drop into the notch 45 due to the takeup movement of the cloth. Immediately after this thread enters the notch 45 it will be severed by the next forward movement or cutting stroke of the movable cutter 35, this stroke serving to carry the front wall of the notch 45 forwardly past the rear edge of the stationary cutter 31 and to shear off the thread between these two members. This hook-shaped blade 35 and the parts associated therewith provide a very reliable cutter construction.

The mechanism above described thus operates very positively and reliably to grasp a strand of filling running to a shuttle which has just been moved into an idle position in the drop box and to sever this strand of filling at a point closely adjacent to the selvage of the goods. After the filling has been so cut, the cut end will drop down in front of the lay but the bight of filling will still be gripped between the parts 10 and 12. Consequently, when the shuttle to which this filling runs is again brought into operation, the end of the filling will still be held while the shuttle makes its first pick. In fact, a bight of filling once forced between the gripping members 10 and 12 '2 is never released until both ends of it have been cut and it is finally forced out from between the parts 10 and 12 at the back of the gripper or clamp due to the action of the blade 1'7 in forcing additional strands into the gripper.

In weaving some fabrics the shuttle changes are so infrequent that in order to save wear and to increase the life of the mechanism it is desirable to place either the gripping or cutting devices,

or both of them, under the control of the pattern guideway permitting a horizontal sliding movement of the cam 2'7 in a direction parallel to the lay. This arrangement permits the shifting of the cam 2'7 into and out of cooperative relationship to the roll 26 on the arm 23.

In order to produce such a shifting movement nearer:

automatically? connections. are provided running from this. 3&11'1L1t0ith6 lever'fit which forms. at part of. theipatiiern mechanism forwcomtrollingc the sequence: of operations of the loom; Fig. 1'. shows a: part at a standard: multiplier motion. of. a Cromptom 8:.Knowlesblanketloomg. this multiplier including. twoilobedi cams. 52 and 53;. respectively; which are rotatedi selectively and-intermittently under." the:control of the chaimfi kof thev pattern mechanisms. Eachof thecamsJ52 and5.3iis:arrangede toraotvon'. a bar which is pivoted to the lever 51, and a spring (not shown) actsthrough the: leverto: press. its, forward. endi upwardly and thus." to hold? the. bar 55. in. contact. with: one or bflthl ctr: the: cams Bland When this: pattern mechanism callsifor' a. changefincolor, and consequently indicates? a shittin the shuttlesin: the drop. box-42'; one. ofi the. cams; 52* or 53: forces the bar 55" downwardly; thus depressing. the: forward end .of' the. lever" 51*. movement transmitted; through; a; rod, or link' 56. to an arm. 51'

secured: fast or: a horizontal: rock shaft. 58 which is; supported; in bracketssholted to the frame of the: machine. Anotherarm. 60i secured? to i the: end of this rock shaft has a pin and slot. connection 61 with the: p1ate=..49which. is; integral with. or rigidly: securedz to the: came 27-. Fhe downward movement. of: the: lever 51; therefore operates through theqconnections just described to-shift the camz2'l'toward the right,- I ig. 1., into cooperativelrelationshipito the: operating arm 23 for the gripper-blade: The:;gripper .device thus' is brought into: action substantially simultaneously with the shifting of: the shuttles: the boxes and it remains in: operation: for a'period; determined by the: action of. the: pattern mechanism, usually iorseveralpicks. r l l When the lever film's-again. raised; it. tends: to operate through the connections. with the: cam: 2.7, to: shift this cam f intns ant inoperative relationship to the arm 23 and this result definitely iSI'EtQCOllJ-r pli'sliedithrough the joint. action of: the pattern mechanism and the spring, 62 which= connects. the arm: 5.7 witha stationary" part of the frame; these parts serving normally to: hold: the: gripper in. an inactive condition; i r :A. part of the connections. just.- describedi are also utilized to throw the. cutter. into and: out of action" simultaneously: with the shifting. of the cam: 2.7... Referring-1' to Eigsz: 1 and 2;..itwill be seem that. a latch. 63' is; pivoted on. a. stationary parttof the: templezlframe' at 64",. Fig. l'.. The rearward'end. oil this latch. includes a. hook 6 5.; Fig; 2', which drops over the pin. 38: when the i cutter is fOZCGdFlDtOEltSBXt'ITGIIIE: forward: position and thusvretains the cutter in the latter. position where. it is just. beyond the. range of movement of the lay. In order: to. release: the cutter... a bell crank lever is" fulcrumed on. a bracket. 66, Figs.

1: and: secured to: the breast beami andrincludes 63; but the: lever- 51* of; the: multiplier mo.-

tion is depressed in: the; manner'above' described, this. movement is: transmitted throughJthe: corrnectionsz just described tosthewbell cranlcrlever 6770 and swings the: horizontal arm 6710f this lever'forwardiinto:therpositi-oirshovvnin Figs. 1

and; 2- .Where. it lifts the latclu 6S. and; causes: it to release the cutter. The hook-shaped cutter blade 35. is immediately moved backward: byxthe spring): 43 and: lever 41, and the cutter continues tfle operateuntil. the pattern mechanism lifts the arm; 5.1-., this. movement resulting in allowing the latch 63 to drop again; Where: it will: catch and'hold tho' pin 38cm the cutter.

The. invention thus: provides: a: mechanism; for gripping and; cutting: the. filling running. from the selvage: of the. goods; to an'idles shuttle in the drop. box whch: is simple: in. construction; extremely reliable. and which can. be manufactured ahdiiistalledi on: a 100m economically. The gripping and: cutting. devices: may either be run continuously oretheycan be placed; under the control of the pattern mechanism of. the ma:- chine so that. they will. be. brought; into operation and throwniout oi action; again at predetermined times. In. a. typical arrangement the gripping and cutting; devices are-held normally out. oi action but are brought into operation. temporarily when the workingshuttleis retired and thrown out of action. shortly. thereafter; Excessive? wear of the parts thus is; avoided, and' the: life: of. the device is correspondingly increased:

In; some cases;. as; for example in weaving a blanket. having alargeplain body or central area and a. striped margin, the. pattern chain of the loom run continuously during. the: weaving of plain section. so: that. the. loom- Will make two: picks with one: shuttle and then: two picks with another. shuttleyboth. shuttles carrying the same color. 1 Under these circumstances it is: desirable to hold the gripping and: cutting: devices out of. action so: long as the chainv is: running, and to bring-"them intci operatiorr only when the chain stops. This. mayconveniently be. accomplished. by reversingthe connections between the rock shaft 56 and: the lever. Sland: shifting the. point of attachment or; the rod; orlink 56 to the: opposite side of the fulcrum: of the lever 51 sozthat' the cam. 2-7 will be held out. of its operative position SOEIOIIS' the forward. end of the-l'everfil is depressed and will? be brought into its operative. position only when the forward. end of; said. lever: is. allowed to. rise;

it While we: have herein: shown and. described a preferredvembodinient. of our invention, it will he" understood. that the invention. may be em bodied .intother forms without departing. from the: spirit or scope thereof. Having thus: described our; invention,v what we desire: to claim: as new is:

1.. In a box. loom of the. type in: which pattern mechanism automatically" controlsthe shifting of the shuttles. in the drop box, the combination of meansamounted. on: thelay of the m for gripping a strand of fillingirunning from: the selvagc ofi the: fabric in the: loom to an idle shuttle in the drop. box, mechanism arranged to be operated by. the: movement of the lay but under the control" of: the pattern. mechanismof the loom for operatingvsaidi gripping means. and means operable: on the strand so gripped to sever it at-alpoint adjacent to" the selvage of the goods.

2;. In a box loom of the type which: pattern mechanism automatically controls the shifting or the. shuttles in: the drop. box, the combination of means mounted! on the lay of: the 100m for gripping strand of: filling runningTr-om the selvagerct. the fabric in the loom to ail-idle shuttl'e-l in; the. dropv hos mechanism. for utilizing the movement. of? the: laytovoperate said gripping means; means for. normally holding said grip-- Jill) ping means in an inactive condition, means for acting on a strand of filling so gripped to sever it at a point adjacent to the selvage of the goods, and connections for causing the pattern mechanism of the loom to bring said gripping means into action at predetermined times in the cycle of operations of the loom.

3. In a box loom of the type in which pattern mechanism automatically controls the shifting of the shuttles in the drop box, the combination of means mounted on the lay of the loom for gripping a strand of filling running from the selvage of the fabric in the loom to an idle shuttle in the drop box, mechanism for utilizing the movement of the lay to operate said gripping means, means for normally holding said gripping means in an inactive condition, means for acting on a strand of filling so gripped to sever it at a point adjacent to the selvage of the goods, and connections for causing the pattern mechanism of the loom to bring said gripping means temporarily into operation upon a call for a change of shuttles at the drop box.

4, In a box loom of the type in which pattern mechanism automatically controls the shifting of the shuttle in the drop box, the combination of means for gripping a strand of filling running from the selvage of the fabric in the loom to an idle shuttle in the drop box, mechanism for utilizing the movement of the lay to operate said gripping means, means arranged to be operated by the lay for severing a strand of filling so gripped at a point adjacent to the selvage of the goods, means for normally holding both said clamping means and said severing means in an inactive condition, and connections for causing the pattern mechanism of the loom to bring both said severing and gripping means into operation temporarily when the pattern mechanism retires a working shuttle at the drop box.

5. In a box loom of the type in which pattern mechanism automatically controls the shifting of the shuttles in'the' drop box, the combination of means mounted on the lay of the loom for gripping a strand of filling running from the selvage of the fabric in the loom to an idle shuttle in the drop box, mechanism for operating said gripping means including cooperating parts mounted for relative movement into and out of cooperative relationship, means under the control of the pattern mechanism for normally holding one of said parts out of cooperative relationship to the other and thereby maintaining the gripping means in an inactive condition, connections for causing said pattern mechanism to relatively move said parts into cooperating relationship to each other under predetermined conditions, and means for severing the strand so gripped closely adjacent to the selvage of the goods.

6. In a box loom of the type in which pattern mechanism automatically controls the shifting of the shuttles in the drop box, the combination of means for gripping a strand of filling running from the selvage of the fabric in the loom to an idle shuttle in the drop box, mechanism for operating said gripping means comprising a part movable with the lay and a normally stationary member cooperating with said part to operate the latter, means for normally holding said part and said member out of cooperative relationship to each other, and connections for causing the pattern mechanism to effect a relative shifting movement of said parts into cooperative relationship to each other at predetermined times.

7. In a box loom of the type in which pattern mechanism automatically controls the shifting of the shuttles in the drop box, the combination of means for gripping a strand of filling running from the selvage of the fabric in the loom to an idle shuttle in the drop box, mechanism for operating said gripping means comprising an arm movable with the lay and a normally stationary cam coperating with said arm to swing the latter, and means under the control of the pattern mechanism of the loom for shifting said cam automatically into and out of cooperative relationship to said arm.

8. In a box loom of the type in which pattern mechanism automatically controls the shifting of the shuttles in the drop box, the combination of means for gripping a strand of filling running from the selvage of the fabric in the loom to an idle shuttle in the drop box, a cutting mechanism arranged to be operated by the motion of the lay for severing said strand at a point adjacent to the selvage of the cloth, and means under the control of the pattern mechanism of the loom for bringing said cutting mechanism into operation and throwing it out of operation again at predetermined times.

9. In a box loom of the type in which pattern mechanism automatically controls the shifting of the shuttles in the drop box, the combination of means for gripping a strand of filling running from the selvage of the fabric in the loom to an idle shuttle in the drop box, a cutting mechanism for severing said strand at a point adjacent to the selvage of the cloth, said cutting mechanism including relatively movable blades and means for utilizing the motion of the lay to operate them, a latch mounted in cooperative relationship to said cutter to catch a part of the cutter mechanism when it is forced forwardly by the lay, and means under the control of the pattern mechanism of the loom for automatically controlling said latch.

10. In a loom having pattern mechanism for controlling certain of the operations of the loom, the combination with a selvage cutter comprising a supporting frame, two relatively movable blades mounted on said frame and adapted to operate closely beside the selvage at the fell of the goods, and power driven means for relatively moving said blades to operate the cutter, of additional means under the control of the pattern mechanism of the loom for bringing said cutteroperating means into operation and throwing it out of operation again at predetermined times.

11. In a box loom of the type in which pattern mechanism automatically controls the shifting of the shuttles in the drop box, the combination of means mounted on the lay of the loom for gripping a strand of filling running from the selvage of the fabric in the loom to an idle shuttle in the drop box, mechanism for operating said gripping means comprising a part movable with the lay and a normally stationary member cooperating with said part to move it relatively to the lay, means under the control of the pattern mechanism of the loom for shifting said normally stationary member into and out of cooperative relationship to said part carried by the lay to bring said gripping means into action for a time immediately after a working shuttle has been retired at the drop box and to automatically render said gripping means inactive again after a brief interval of operation, and means for cutting the strand so gripped at a point adjacent to the selvage of the goods.

12. Athread holding apparatus for box looms comprising parts for gripping and holding a strand of filling, a blade cooperating with said parts to force a bight of filling between them, a bracket for supporting said blade and said parts, a pivot on which said blade is mounted, and an arm connected with said blade to operate it, said arm being pivoted on said bracket and extending outwardly away from the bracket.

13.1A thread holding apparatus for box looms comprising parts for gripping and holding a strand of filling, a blade cooperating with said parts to force a bight of filling between them, a bracket for supporting said blade and said parts, a pivot on which said blade is mounted, an operating arm for said blade pivoted on said bracket and mounted to swing in a plane at approximately right angles to the plane of movement of the blade, and connections between said arm and said blade for causing the movement of the arm to operate the blade.

14. In a loom having pattern mechanism for automatically controlling certain of its operations, the combination with a selvage cutter comprising two relatively movable blades arranged to operate closely beside the selvage at the fell of the goods, and means arranged to be operated by the motion of the lay for relatively moving said blades to operate the cutter, of additional means under the control of said pattern mechanism of the loom for bringing said cutter operating means into operation and throwing it out of operation again at predetermined times.

15. In a box loom of the type in which pattern mechanism automatically controls the shifting of the shuttles in the drop box, the combination of means mounted on the lay of the loom for gripping a strand of filling running from the selvage of the fabric in the loom to an idle shuttle in thedrop box, power driven mechanism for operating said gripping means, and additional means under the control of the pattern mechanism of the loom for bringing said gripping means into operation and throwing it out of operation again at predetermined times.

16. In a box loom of the type in which pattern mechanism automatically controls the shifting of the shuttles in the drop box, the combination of means mounted on the lay of the loom for gripping a strand of filling running from the selvage of the fabric in the loom to an idle shuttle in the drop box, mechanism under the control of the pattern mechanism of the loom for operating said gripping means, means for definitely guiding said strand into position to be gripped by said gripping means, and means for severing the strands so gripped at a point closely adjacent to the selvage of the goods.

17. In a box loom of the type in which pattern mechanism automatically controls the shifting of the shuttle in the dropbox, the combination of means mounted on the lay of the loom for gripping a strand of filling running from the selvage of the fabric in the loom to an idle shuttle in the drop box, mechanism for operating said gripping means, means for severing a strand of filling so gripped at a point adjacent to the selvage of the goods, means for normally holding both said clamping means and said severing means in an active condition, and connections for causing the pattern mechanism of the loom to bring both said severing and gripping means into operation temporarily when the pattern mechanism retires a working shuttle at the drop box.

18. In a box loom of the type in which pattern mechanism automatically controls the shifting of the shuttles in the drop box, thecombination of means for gripping a strand of filling running from the selvage of the fabric in the loom to an idle shuttle in the drop box, means for definitely guiding said strand into position to be gripped by said gripping means, cutting mechanism for severing saidstrand at a point closely adjacent to the selvage of the cloth, power driven means for operating said cutter mechanism, and means under the control of the pattern mechanism of the loom for bringing said operating mechanism into operation and throwing it out of operation again at predetermined times.

' WILLIAM J. INGHAM.

JOSEPH LAROUCI-IE.

CERTIFICATE OF CORRECTION.

Patent No. 1,974,677. September 25, 1934.

WILLIAM J. INGHAM, ET AL.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 5, line 99, claim 17, for "active" read inactive; and line 114, claim 18, for "cutter" read cutting; and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 30th day of October, A. D. 1934.

Leslie Frazer (Seal) Acting Commissioner of Patents. 

